olemus
ISO 9241-302:
võimalikkus üheselt identifitseerida üksikuid märke või sümboleid, mida võidakse esitada kontekstita vormingus
= ability for unambiguous identification of single characters or symbols that may be presented in a non-contextual format

ülevaateid
https://en.wikipedia.org/wiki/Legibility

https://gwern.net/doc/design/typography/1963-tinker-legibilityofprint.pdf

https://bigital.com/english/files/2008/04/web_legibility_readability.pdf

https://files.eric.ed.gov/fulltext/EJ1079769.pdf

https://www.grid.uns.ac.rs/symposium/download/2022/92.pdf

https://www.sfu.ca/~zsadeghi/docs/legibility-classifier.pdf

https://www.yesataretelearningtrust.net/Portals/0/Handwriting%20Legibility%20Scale%20%28HLS%29%20RIDD%202017.pdf